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Finding the Fourth Proportional to 424,659.60, 636,989.40 and 237,646.80

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Solution

The fourth proportional to 424,659.60, 636,989.40 and 237,646.80 is: 356,470.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,659.60 : 636,989.40 = 237,646.80 : x
  2. Step 2: Convert to fraction form
    424,659.60/636,989.40 = 237,646.80/x
  3. Step 3: Cross multiply
    424,659.60x = 636,989.40 × 237,646.80
  4. Step 4: Simplify right side
    424,659.60x = 151,378,492,543.92
  5. Step 5: Solve for x
    x = 151,378,492,543.92/424,659.60
  6. Step 6: Final answer
    x = 356,470.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.